Moon Release

(月遁, Mūnton; "Moon Style") It's Ahmed's Clan Kekkei Genkai, It's ability to use lunar power, especially in a full moon night, the user's eyes glow like a moon, it begins glowing at the right edge of the cornea -like a crescent-, and expands as power increases, until the entire cornea glows, the user acheives the full power

it was said that this Kekkei Genkai was wielded by very few people among Ahmed's Clan